From patchwork Tue Aug 10 08:30:39 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yunfei Dong X-Patchwork-Id: 12428357 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-17.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY, URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A38F7C432BE for ; Tue, 10 Aug 2021 08:38:35 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 6735F60ED8 for ; Tue, 10 Aug 2021 08:38:35 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 6735F60ED8 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=mediatek.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=WhSVFaBUrh0TUWdX34FQyiI/Vwi8VqcjxUR2RkFRciM=; b=H+KlXeQmbQCA/K jQO9rYd7LImDOK0qtKq/3jGhuLYT9C0EZXYJMFjKGAR5ZrDk9Gec7pEdAPnAA4GhKdiaJstTmmZnn jH9DMq2PLS5MqevxRuI8bEfWT6beiQDFmikD2rRr5YOonxYIJ5LxgBRqMXKYIx6fd91ZvZSs+jbnX 8wQqheA4yRDvA+oa2pBJTwmoTe4FWLrJgQN+QzGpwXLd7czc/uPWcoWogbiI+qvDo48U5kW2FCsW7 Zj4d/T5hYw+Y7vt51gv2RIr+Aua8NevBxbUhOLJMp+6Eoqa0cgfylY27JRLiZwY/t8ihWn/UNxGHr ywaSJaNI8oGjN2aQVPug==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mDNH9-0034Ph-TN; Tue, 10 Aug 2021 08:38:19 +0000 Received: from mailgw02.mediatek.com ([216.200.240.185]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1mDNDC-0032Cb-Ia; Tue, 10 Aug 2021 08:34:17 +0000 X-UUID: 3a51ebf4eb13458ba1356f04e366ddb3-20210810 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Transfer-Encoding:Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=CPvEVMUYgib5GIcgJZtc61L5ZP7yacUPL6cN8acfnM0=; b=cjDK4/ZD3oPC33cHtseBNOe23yXtaztPjGxPtoNibe9zjP5H2aGL9tD5rKNted4NEUp8S0pLP87dJUmzzu16yEe5hyQIubXAa26HFqiBR4sWBdAP2gA75+WnLvr6lv940ZzjC7+moR+IMy0IvIIHSW/9RT0rjRL0Mt/YkPKlguo=; X-UUID: 3a51ebf4eb13458ba1356f04e366ddb3-20210810 Received: from mtkcas66.mediatek.inc [(172.29.193.44)] by mailgw02.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 1661512651; Tue, 10 Aug 2021 01:33:58 -0700 Received: from MTKMBS02N2.mediatek.inc (172.21.101.101) by MTKMBS62N1.mediatek.inc (172.29.193.41) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 10 Aug 2021 01:31:31 -0700 Received: from mtkcas10.mediatek.inc (172.21.101.39) by mtkmbs02n2.mediatek.inc (172.21.101.101) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 10 Aug 2021 16:31:28 +0800 Received: from localhost.localdomain (10.17.3.153) by mtkcas10.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Tue, 10 Aug 2021 16:31:28 +0800 From: Yunfei Dong To: Yunfei Dong , Alexandre Courbot , Hans Verkuil , "Tzung-Bi Shih" , Tiffany Lin , Andrew-CT Chen , Mauro Carvalho Chehab , Rob Herring , Matthias Brugger , Tomasz Figa CC: Hsin-Yi Wang , Fritz Koenig , Irui Wang , , , , , , , , George Sun Subject: [PATCH v4, 07/15] media: mtk-vcodec: Add irq interface for multi hardware Date: Tue, 10 Aug 2021 16:30:39 +0800 Message-ID: <20210810083047.16693-8-yunfei.dong@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20210810083047.16693-1-yunfei.dong@mediatek.com> References: <20210810083047.16693-1-yunfei.dong@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210810_013414_709514_83FFBF78 X-CRM114-Status: GOOD ( 24.45 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org Adds irq interface for multi hardware. Change-Id: I9ed8f9538c83d9376a70bc125f77686ac85cedb9 Signed-off-by: Yunfei Dong --- v4: no change --- .../platform/mtk-vcodec/mtk_vcodec_dec_drv.c | 33 +++++++++++++++++-- .../platform/mtk-vcodec/mtk_vcodec_dec_hw.c | 2 +- .../platform/mtk-vcodec/mtk_vcodec_drv.h | 25 ++++++++++---- .../platform/mtk-vcodec/mtk_vcodec_enc_drv.c | 4 +-- .../platform/mtk-vcodec/mtk_vcodec_intr.c | 27 +++++++-------- .../platform/mtk-vcodec/mtk_vcodec_intr.h | 4 +-- .../platform/mtk-vcodec/vdec/vdec_h264_if.c | 2 +- .../mtk-vcodec/vdec/vdec_h264_req_if.c | 2 +- .../platform/mtk-vcodec/vdec/vdec_vp8_if.c | 2 +- .../platform/mtk-vcodec/vdec/vdec_vp9_if.c | 2 +- .../platform/mtk-vcodec/venc/venc_h264_if.c | 2 +- .../platform/mtk-vcodec/venc/venc_vp8_if.c | 2 +- 12 files changed, 71 insertions(+), 36 deletions(-) diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c index d93ea5c63e1e..d52e975292dc 100644 --- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c +++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c @@ -68,6 +68,20 @@ static const struct component_master_ops mtk_vdec_ops = { .unbind = mtk_vdec_unbind, }; +static int mtk_vcodec_get_hw_count(struct mtk_vcodec_dev *dev) +{ + switch (dev->vdec_pdata->hw_arch) { + case MTK_VDEC_PURE_SINGLE_CORE: + return MTK_VDEC_ONE_CORE; + case MTK_VDEC_LAT_SINGLE_CORE: + return MTK_VDEC_ONE_LAT_ONE_CORE; + default: + mtk_v4l2_err("not support hw arch:%d", + dev->vdec_pdata->hw_arch); + return MTK_VDEC_NO_HW; + } +} + static struct component_match *mtk_vcodec_match_add( struct mtk_vcodec_dev *vdec_dev) { @@ -134,7 +148,7 @@ static irqreturn_t mtk_vcodec_dec_irq_handler(int irq, void *priv) writel((readl(vdec_misc_addr) & ~VDEC_IRQ_CLR), dev->reg_base[VDEC_MISC] + VDEC_IRQ_CFG_REG); - wake_up_ctx(ctx, MTK_INST_IRQ_RECEIVED); + wake_up_ctx(ctx, MTK_INST_IRQ_RECEIVED, 0); mtk_v4l2_debug(3, "mtk_vcodec_dec_irq_handler :wake up ctx %d, dec_done_status=%x", @@ -224,7 +238,7 @@ static int fops_vcodec_open(struct file *file) { struct mtk_vcodec_dev *dev = video_drvdata(file); struct mtk_vcodec_ctx *ctx = NULL; - int ret = 0; + int ret = 0, i, hw_count; struct vb2_queue *src_vq; ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); @@ -238,7 +252,19 @@ static int fops_vcodec_open(struct file *file) v4l2_fh_add(&ctx->fh); INIT_LIST_HEAD(&ctx->list); ctx->dev = dev; - init_waitqueue_head(&ctx->queue); + + if (ctx->dev->vdec_pdata->is_comp_supported) { + hw_count = mtk_vcodec_get_hw_count(dev); + if (!hw_count) { + ret = -EINVAL; + goto err_init_queue; + } + for (i = 0; i < hw_count; i++) + init_waitqueue_head(&ctx->queue[i]); + } else { + init_waitqueue_head(&ctx->queue[0]); + } + mutex_init(&ctx->lock); ctx->type = MTK_INST_DECODER; @@ -295,6 +321,7 @@ static int fops_vcodec_open(struct file *file) err_m2m_ctx_init: v4l2_ctrl_handler_free(&ctx->ctrl_hdl); err_ctrls_setup: +err_init_queue: v4l2_fh_del(&ctx->fh); v4l2_fh_exit(&ctx->fh); kfree(ctx); diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_hw.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_hw.c index 5e1b7670ba5b..7a31afd294ba 100644 --- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_hw.c +++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_hw.c @@ -87,7 +87,7 @@ static irqreturn_t mtk_vdec_comp_irq_handler(int irq, void *priv) writel(dec_done_status | VDEC_IRQ_CFG, vdec_misc_addr); writel(dec_done_status & ~VDEC_IRQ_CLR, vdec_misc_addr); - wake_up_ctx(ctx, MTK_INST_IRQ_RECEIVED); + wake_up_ctx(ctx, MTK_INST_IRQ_RECEIVED, dev->comp_idx); mtk_v4l2_debug(3, "wake up ctx %d, dec_done_status=%x", ctx->id, dec_done_status); diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_drv.h b/drivers/media/platform/mtk-vcodec/mtk_vcodec_drv.h index 1d0798fd9adf..08fd43106fc7 100644 --- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_drv.h +++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_drv.h @@ -104,6 +104,16 @@ enum mtk_vdec_hw_id { MTK_VDEC_HW_MAX, }; +/** + * struct mtk_vdec_hw_count - Supported hardware count + */ +enum mtk_vdec_hw_count { + MTK_VDEC_NO_HW = 0, + MTK_VDEC_ONE_CORE, + MTK_VDEC_ONE_LAT_ONE_CORE, + MTK_VDEC_MAX_HW_COUNT, +}; + /* * struct mtk_video_fmt - Structure used to store information about pixelformats */ @@ -293,9 +303,9 @@ struct mtk_vcodec_ctx { struct vdec_pic_info picinfo; int dpb_size; - int int_cond; - int int_type; - wait_queue_head_t queue; + int int_cond[MTK_VDEC_HW_MAX]; + int int_type[MTK_VDEC_HW_MAX]; + wait_queue_head_t queue[MTK_VDEC_HW_MAX]; unsigned int irq_status; struct v4l2_ctrl_handler ctrl_hdl; @@ -501,11 +511,12 @@ static inline struct mtk_vcodec_ctx *ctrl_to_ctx(struct v4l2_ctrl *ctrl) } /* Wake up context wait_queue */ -static inline void wake_up_ctx(struct mtk_vcodec_ctx *ctx, unsigned int reason) +static inline void wake_up_ctx(struct mtk_vcodec_ctx *ctx, unsigned int reason, + unsigned int hw_id) { - ctx->int_cond = 1; - ctx->int_type = reason; - wake_up_interruptible(&ctx->queue); + ctx->int_cond[hw_id] = 1; + ctx->int_type[hw_id] = reason; + wake_up_interruptible(&ctx->queue[hw_id]); } #endif /* _MTK_VCODEC_DRV_H_ */ diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_drv.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_drv.c index 2828df77020c..c7540c0cdcea 100644 --- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_drv.c +++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_drv.c @@ -114,7 +114,7 @@ static irqreturn_t mtk_vcodec_enc_irq_handler(int irq, void *priv) clean_irq_status(ctx->irq_status, addr); - wake_up_ctx(ctx, MTK_INST_IRQ_RECEIVED); + wake_up_ctx(ctx, MTK_INST_IRQ_RECEIVED, 0); return IRQ_HANDLED; } @@ -140,7 +140,7 @@ static int fops_vcodec_open(struct file *file) v4l2_fh_add(&ctx->fh); INIT_LIST_HEAD(&ctx->list); ctx->dev = dev; - init_waitqueue_head(&ctx->queue); + init_waitqueue_head(&ctx->queue[0]); ctx->type = MTK_INST_ENCODER; ret = mtk_vcodec_enc_ctrls_setup(ctx); diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_intr.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_intr.c index 70580c2525ba..8147533da98b 100644 --- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_intr.c +++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_intr.c @@ -11,34 +11,31 @@ #include "mtk_vcodec_intr.h" #include "mtk_vcodec_util.h" -int mtk_vcodec_wait_for_done_ctx(struct mtk_vcodec_ctx *ctx, int command, - unsigned int timeout_ms) +int mtk_vcodec_wait_for_done_ctx(struct mtk_vcodec_ctx *ctx, + int command, unsigned int timeout_ms, unsigned hw_id) { - wait_queue_head_t *waitqueue; long timeout_jiff, ret; int status = 0; - waitqueue = (wait_queue_head_t *)&ctx->queue; timeout_jiff = msecs_to_jiffies(timeout_ms); - - ret = wait_event_interruptible_timeout(*waitqueue, - ctx->int_cond, + ret = wait_event_interruptible_timeout(ctx->queue[hw_id], + ctx->int_cond[hw_id], timeout_jiff); if (!ret) { status = -1; /* timeout */ - mtk_v4l2_err("[%d] ctx->type=%d, cmd=%d, wait_event_interruptible_timeout time=%ums out %d %d!", - ctx->id, ctx->type, command, timeout_ms, - ctx->int_cond, ctx->int_type); + mtk_v4l2_err("[%d] cmd=%d, type=%d, dec timeout=%ums (%d %d)", + ctx->id, command, ctx->type, timeout_ms, + ctx->int_cond[hw_id], ctx->int_type[hw_id]); } else if (-ERESTARTSYS == ret) { - mtk_v4l2_err("[%d] ctx->type=%d, cmd=%d, wait_event_interruptible_timeout interrupted by a signal %d %d", - ctx->id, ctx->type, command, ctx->int_cond, - ctx->int_type); status = -1; + mtk_v4l2_err("[%d] cmd=%d, type=%d, dec inter fail (%d %d)", + ctx->id, command, ctx->type, + ctx->int_cond[hw_id], ctx->int_type[hw_id]); } - ctx->int_cond = 0; - ctx->int_type = 0; + ctx->int_cond[hw_id] = 0; + ctx->int_type[hw_id] = 0; return status; } diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_intr.h b/drivers/media/platform/mtk-vcodec/mtk_vcodec_intr.h index 638cd1f3526a..2bf4cabfaa43 100644 --- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_intr.h +++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_intr.h @@ -12,7 +12,7 @@ struct mtk_vcodec_ctx; /* timeout is ms */ -int mtk_vcodec_wait_for_done_ctx(struct mtk_vcodec_ctx *data, int command, - unsigned int timeout_ms); +int mtk_vcodec_wait_for_done_ctx(struct mtk_vcodec_ctx *ctx, + int command, unsigned int timeout_ms, unsigned int hw_id); #endif /* _MTK_VCODEC_INTR_H_ */ diff --git a/drivers/media/platform/mtk-vcodec/vdec/vdec_h264_if.c b/drivers/media/platform/mtk-vcodec/vdec/vdec_h264_if.c index 40d6e6c5ac7a..481655bb6016 100644 --- a/drivers/media/platform/mtk-vcodec/vdec/vdec_h264_if.c +++ b/drivers/media/platform/mtk-vcodec/vdec/vdec_h264_if.c @@ -413,7 +413,7 @@ static int vdec_h264_decode(void *h_vdec, struct mtk_vcodec_mem *bs, /* wait decoder done interrupt */ err = mtk_vcodec_wait_for_done_ctx(inst->ctx, MTK_INST_IRQ_RECEIVED, - WAIT_INTR_TIMEOUT_MS); + WAIT_INTR_TIMEOUT_MS, 0); if (err) goto err_free_fb_out; diff --git a/drivers/media/platform/mtk-vcodec/vdec/vdec_h264_req_if.c b/drivers/media/platform/mtk-vcodec/vdec/vdec_h264_req_if.c index 4dde9ee786b4..d23baa364246 100644 --- a/drivers/media/platform/mtk-vcodec/vdec/vdec_h264_req_if.c +++ b/drivers/media/platform/mtk-vcodec/vdec/vdec_h264_req_if.c @@ -724,7 +724,7 @@ static int vdec_h264_slice_decode(void *h_vdec, struct mtk_vcodec_mem *bs, /* wait decoder done interrupt */ err = mtk_vcodec_wait_for_done_ctx(inst->ctx, MTK_INST_IRQ_RECEIVED, - WAIT_INTR_TIMEOUT_MS); + WAIT_INTR_TIMEOUT_MS, 0); if (err) goto err_free_fb_out; vpu_dec_end(vpu); diff --git a/drivers/media/platform/mtk-vcodec/vdec/vdec_vp8_if.c b/drivers/media/platform/mtk-vcodec/vdec/vdec_vp8_if.c index e5393f841080..88c046731754 100644 --- a/drivers/media/platform/mtk-vcodec/vdec/vdec_vp8_if.c +++ b/drivers/media/platform/mtk-vcodec/vdec/vdec_vp8_if.c @@ -488,7 +488,7 @@ static int vdec_vp8_decode(void *h_vdec, struct mtk_vcodec_mem *bs, /* wait decoder done interrupt */ mtk_vcodec_wait_for_done_ctx(inst->ctx, MTK_INST_IRQ_RECEIVED, - WAIT_INTR_TIMEOUT_MS); + WAIT_INTR_TIMEOUT_MS, 0); if (inst->vsi->load_data) load_dec_table(inst); diff --git a/drivers/media/platform/mtk-vcodec/vdec/vdec_vp9_if.c b/drivers/media/platform/mtk-vcodec/vdec/vdec_vp9_if.c index 71cdc3ddafcb..70b8383f7c8e 100644 --- a/drivers/media/platform/mtk-vcodec/vdec/vdec_vp9_if.c +++ b/drivers/media/platform/mtk-vcodec/vdec/vdec_vp9_if.c @@ -539,7 +539,7 @@ static bool vp9_wait_dec_end(struct vdec_vp9_inst *inst) mtk_vcodec_wait_for_done_ctx(inst->ctx, MTK_INST_IRQ_RECEIVED, - WAIT_INTR_TIMEOUT_MS); + WAIT_INTR_TIMEOUT_MS, 0); if (ctx->irq_status & MTK_VDEC_IRQ_STATUS_DEC_SUCCESS) return true; diff --git a/drivers/media/platform/mtk-vcodec/venc/venc_h264_if.c b/drivers/media/platform/mtk-vcodec/venc/venc_h264_if.c index b6a4f2074fa5..9ae1bd8dbc32 100644 --- a/drivers/media/platform/mtk-vcodec/venc/venc_h264_if.c +++ b/drivers/media/platform/mtk-vcodec/venc/venc_h264_if.c @@ -335,7 +335,7 @@ static unsigned int h264_enc_wait_venc_done(struct venc_h264_inst *inst) struct mtk_vcodec_ctx *ctx = (struct mtk_vcodec_ctx *)inst->ctx; if (!mtk_vcodec_wait_for_done_ctx(ctx, MTK_INST_IRQ_RECEIVED, - WAIT_INTR_TIMEOUT_MS)) { + WAIT_INTR_TIMEOUT_MS, 0)) { irq_status = ctx->irq_status; mtk_vcodec_debug(inst, "irq_status %x <-", irq_status); } diff --git a/drivers/media/platform/mtk-vcodec/venc/venc_vp8_if.c b/drivers/media/platform/mtk-vcodec/venc/venc_vp8_if.c index 8267a9c4fd25..f96564277577 100644 --- a/drivers/media/platform/mtk-vcodec/venc/venc_vp8_if.c +++ b/drivers/media/platform/mtk-vcodec/venc/venc_vp8_if.c @@ -222,7 +222,7 @@ static unsigned int vp8_enc_wait_venc_done(struct venc_vp8_inst *inst) struct mtk_vcodec_ctx *ctx = (struct mtk_vcodec_ctx *)inst->ctx; if (!mtk_vcodec_wait_for_done_ctx(ctx, MTK_INST_IRQ_RECEIVED, - WAIT_INTR_TIMEOUT_MS)) { + WAIT_INTR_TIMEOUT_MS, 0)) { irq_status = ctx->irq_status; mtk_vcodec_debug(inst, "isr return %x", irq_status); }